Art of Construction

Unit 12: Strings and Sticks


Parts of a Truss Roof: rafter, truss members, roofing tile, purlins
"In a truss roof, a number of trusses parallel to each other support
horizontal beams called purlins. On them are set the inclined rafters, on
which planks of wood are nailed or flat or round tiles are set."

p. 97 Art of Construction

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Unit Navigation Unit 1: From Cave to Skyscraper Unit 2: Building a Tent Unit 3: What is a Beam? Unit 4: What Do We Build Structures With? Unit 5: The Floor of Your Room Unit 6: A Steel Frame Unit 7: Part of a Building You Don't See Unit 8: What Tornadoes, Earthquakes, and Temperature Can Do Unit 9: How to Fight Tornadoes and Earthquakes Unit 10: Ropes and Cables Salvadori Center Unit 13: Shape and Strength Unit 14: Barrels, Dishes, Butterflies, Bicycle Wheels and Eggs Unit 12: Strings and Sticks Unit 11: Sticks and Stones Unit 15: Balloons...and Back to the Tent